Demonstrating elements of measurement-based quantum error correction

Autor(en)

Stefanie Barz, Rui Vasconcelos, Chiara Greganti, Michael Zwerger, Wolfgang Dür, Hans J. Briegel, Philip Walther

Abstrakt

In measurement-based quantum computing an algorithm is performed by measurements on highly entangled resource states. To date, several implementations were demonstrated, most of them assuming perfect noise-free environments. Here we consider measurement-based information processing in the presence of noise and demonstrate quantum error detection. We implement the protocol using a four-qubit photonic cluster state where we first encode a general qubit nonlocally such that phase errors can be detected. We then read out the error syndrome and analyze the output states after decoding. Our demonstration shows a building block for measurement-based quantum computing which is crucial for realistic scenarios.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Leopold-Franzens-Universität Innsbruck, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physical Review A

Band

90

Anzahl der Seiten

10

ISSN

1050-2947

DOI

https://doi.org/10.1103/PhysRevA.90.042302

Publikationsdatum

10-2014

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik

Schlagwörter

ASJC Scopus Sachgebiete

Atomic and Molecular Physics, and Optics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/4f4d1954-2f0d-4248-a3f9-4a9a65470bb2